Desorption hysteresis of CO2 and CH4 in different coals with cyclic desorption experiments

The gas adsorption/desorption experiments in coal are important contents in the research of coalbed methane (CBM) recovery and CO2 sequestration. However, the curve of gas desorption often lags behind the adsorption curve, which is called desorption hysteresis. Desorption hysteresis is a common phenomenon that has a significant impact on the prediction of CBM recovery. In this paper, the characteristics of CH4 and CO2 desorption were examined...